CitŠ’ Peter Szinek <peter / rubyrailways.com>:
> Roughly in this order... A cheatsheet or something would be handy.. 
> maybe there is already one somewhere?
> 

http://code.whytheluckystiff.net/hpricot/wiki/SupportedXpathExpressions ?

Also, I'd take that in preference to point 3, using an XPath -ish sort of query
and then using a syntax element the implementation happens to not understand is
rather infuriating. (Aght REXML not supporting text() in a POLS way, if at
all.)

David Vallner